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<h1 class="doctools_title">textutil::patch(n) 0.1 tcllib &quot;Text and string utilities&quot;</h1>
<div id="name" class="doctools_section"><h2><a name="name">Name</a></h2>
<p>textutil::patch - Application of uni-diff patches to directory trees</p>
</div>
<div id="toc" class="doctools_section"><h2><a name="toc">Table Of Contents</a></h2>
<ul class="doctools_toc">
<li class="doctools_section"><a href="#toc">Table Of Contents</a></li>
<li class="doctools_section"><a href="#synopsis">Synopsis</a></li>
<li class="doctools_section"><a href="#section1">Description</a></li>
<li class="doctools_section"><a href="#section2">Bugs, Ideas, Feedback</a></li>
<li class="doctools_section"><a href="#keywords">Keywords</a></li>
<li class="doctools_section"><a href="#category">Category</a></li>
</ul>
</div>
<div id="synopsis" class="doctools_section"><h2><a name="synopsis">Synopsis</a></h2>
<div class="doctools_synopsis">
<ul class="doctools_requirements">
<li>package require <b class="pkgname">Tcl 8.2</b></li>
<li>package require <b class="pkgname">textutil::patch <span class="opt">?0.1?</span></b></li>
</ul>
<ul class="doctools_syntax">
<li><a href="#1"><b class="cmd">::textutil::patch::apply</b> <i class="arg">basedirectory</i> <i class="arg">striplevel</i> <i class="arg">patch</i> <i class="arg">reportcmd</i></a></li>
<li><a href="#2"><b class="cmd">{*}reportcmd</b> <b class="method">apply</b> <i class="arg">filename</i></a></li>
<li><a href="#3"><b class="cmd">{*}reportcmd</b> <b class="method">fail</b> <i class="arg">filename</i> <i class="arg">hunk</i> <i class="arg">expected</i> <i class="arg">seen</i></a></li>
<li><a href="#4"><b class="cmd">{*}reportcmd</b> <b class="method">fail-already</b> <i class="arg">filename</i> <i class="arg">hunk</i></a></li>
</ul>
</div>
</div>
<div id="section1" class="doctools_section"><h2><a name="section1">Description</a></h2>
<p>This package provides a single command which applies a patch in
<a href="https://www.gnu.org/software/diffutils/manual/html_node/Detailed-Unified.html">unified format</a>
to a directory tree.</p>
<dl class="doctools_definitions">
<dt><a name="1"><b class="cmd">::textutil::patch::apply</b> <i class="arg">basedirectory</i> <i class="arg">striplevel</i> <i class="arg">patch</i> <i class="arg">reportcmd</i></a></dt>
<dd><p>Applies the <i class="arg">patch</i> (text of the path, not file) to the files in
the <i class="arg">basedirectory</i> using the specified <i class="arg">striplevel</i>.
The result of the command is the empty string.</p>
<p>The <i class="arg">striplevel</i> argument is equivalent to option
<b class="option">-p</b> of the <b class="syscmd"><a href="../../../../index.html#patch">patch</a></b> command.</p>
<p>Errors are thrown when the <i class="arg">patch</i> does not parse, and
nothing is done to the files in <i class="arg">basedirectory</i>.</p>
<p>All activities during the application of the patch, including
the inability to apply a hunk are reported through the command prefix
<i class="arg">reportcmd</i> instead. Files with problems are left unchanged.  Note
however that this does <em>not prevent</em> changes to files with no
problems, before and after the problematic file(s).</p>
<p>The command prefix is called in 3 possible forms:</p>
<dl class="doctools_definitions">
<dt><a name="2"><b class="cmd">{*}reportcmd</b> <b class="method">apply</b> <i class="arg">filename</i></a></dt>
<dd><p>The caller begins operation on file <i class="arg">fname</i>, applying all hunks
collected for said file.</p></dd>
<dt><a name="3"><b class="cmd">{*}reportcmd</b> <b class="method">fail</b> <i class="arg">filename</i> <i class="arg">hunk</i> <i class="arg">expected</i> <i class="arg">seen</i></a></dt>
<dd><p>Application of hunk number <i class="arg">hunk</i> of file <i class="arg">filename</i> has failed.
The command expected to find the text <i class="arg">expected</i>, and saw <i class="arg">seen</i> instead.</p></dd>
<dt><a name="4"><b class="cmd">{*}reportcmd</b> <b class="method">fail-already</b> <i class="arg">filename</i> <i class="arg">hunk</i></a></dt>
<dd><p>Application of hunk number <i class="arg">hunk</i> of file <i class="arg">filename</i> has failed.
The command believes that this hunk has already been applied to the file.</p></dd>
</dl></dd>
</dl>
</div>
<div id="section2" class="doctools_section"><h2><a name="section2">Bugs, Ideas, Feedback</a></h2>
<p>This document, and the package it describes, will undoubtedly contain
bugs and other problems.
Please report such in the category <em>textutil</em> of the
<a href="http://core.tcl.tk/tcllib/reportlist">Tcllib Trackers</a>.
Please also report any ideas for enhancements you may have for either
package and/or documentation.</p>
<p>When proposing code changes, please provide <em>unified diffs</em>,
i.e the output of <b class="const">diff -u</b>.</p>
<p>Note further that <em>attachments</em> are strongly preferred over
inlined patches. Attachments can be made by going to the <b class="const">Edit</b>
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar.</p>
</div>
<div id="keywords" class="doctools_section"><h2><a name="keywords">Keywords</a></h2>
<p><a href="../../../../index.html#diff_run">diff -ruN</a>, <a href="../../../../index.html#diff_unified_format">diff, unified format</a>, <a href="../../../../index.html#fossil">fossil</a>, <a href="../../../../index.html#git">git</a>, <a href="../../../../index.html#patch">patch</a>, <a href="../../../../index.html#unified_format_diff">unified format diff</a></p>
</div>
<div id="category" class="doctools_section"><h2><a name="category">Category</a></h2>
<p>Text processing</p>
</div>
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